Water urn for battery coffee urns



Sept. 1s, 1923. 11,468,527 A T. J. TOPPER WATER URN FOR BATTRY COFFEEURNS Filed April 14, 1921 .A z M Patented Sept.` 18, 1923.

UNVITED STATES THOMAS J. TOPPER, OF SAN FRANCISCO, CALFORNI.

WATER URN FOR BATTERY COFFEE URNS.

Application led April 14, 1921. Serial No. 461,196.

To all whom t may concern Be it known that I, THOMAS J. Torrnn, acitizen of .the-United States, residing at'San Francisco, in the countyof San Francisco d and State of California, have invented new and usefulImprovements in Water Urns for Battery Coffee Urns, of which thefollowing is a specification. i c

This invention relates` to improvements in il@ vcoffee urns of thebattery type, wherein two or more urns are operatively associated with awater urn, and has particular reference to improvements in theconstruction, arrangement and mode of operation of a water urn. l@

provide a water urn which will be relatively simple and inexpensive asto construction and will eliminate certain objections and diflicultiesattending theuse of urns of the ordinary y construction. In the majorityof urns the safety-or blow off valve is located exteri'orly of the urnand when the urn is filled beyond its capacity and discharges thru thevalve or blows E the steam generated therein, it fre* sa quently happensthat persons standing iiearby are scalded or articles of furniture orthe like, are damaged by the water and steam. 1n my invention the safetyvalve is located within the urn, or in other words, is enclosed Si@ andobjections.

Another object of the invention is to provideV an improved, simple, andeffective safety or blow off valve which will operate to -permit air tobe drawn into the urn so as to prevent collapsing or bursting ofthe urndue tothe formation of a vacuum therein when water is drawn orand whichwill also provide for the escape of steam in suchmanner as to preventscattering or blowing off of the steam around the outside of the urn.

' A further object is to generally improve :water urns of the characterdescribed so as to increase their elfectiveness and ctliciency and toprovide for the supplying to coffee urns, of adequate hot water in aninexpensive and ie liable manner.

The. invention possesses other advantages and features some of which,with the foregoing will be set forth at length in the followingdescription where I shall outline in full that form of the inventionwhich I have selected-,for illustration in the drawings accompanying andforming a part of the pres-V 55 ent specification. In said drawings Ihave shownone form of the construction of my inrIhe primary object ofthe invention is to [provide a boiler 6 into which waterfroin a so as toavoid the above mentioned diliicultiesflangedscrew cap 16 is removablymounted.

vention, but it is to be understood that I do not limit myself to suchforni since the invention as expressed in the claims may be enibodied ina plurality of forms. j Referring to the drawings: y

Figure 1 is a vertical sectional view of the water urns of thisinvention, showing the connection on the side thereof, adapted forattachment with coffee urns of the battery e5 urns, not shown.

Figure 2 is an enlarged vertical sectional view of the safety valveshowing it attached to the upper part of the boiler, a part of whichlatter is shown in section.

Figure 3 is a side elevation of the valve of lthe invention removed fromits casing.

Figure 4 is a top plan view of the said valve.

Referring to the embodiment of the inveiition shown in the accompanyingdrawings, 1 designates an urn which consists of a cylin drical wall 2, abottom wall 3, a top wall t and the lid or cover 5. The walls 2, 3 and4l suitable source of supply, not shown, is fed by the pipe 7, a valve 8being provided in the pipe 7 to regulate the supply of water. c Mountedbeneath the wall 3, which wall is set upwardly fromthe lower' edge ofthe wall 2 so as to provide a burner chamber 9, is a suitable-,gasburner 10 disposed so that the -I'lames ytherefrom will flare outwardlyupon the under side of the wall 3. Extending upwardly thru the boiler 6with the ends thereof projected thru the walls 3 and't are heating tubes11 thru which heat from the burner 10 passes and escapes into the spaceconfinedl within the cover or lid 5, the heat being transferred to thewater in the boiler thru'walls of the tubes 11.- Legs ,12 are attachedto the wall 3 and provide for supportingthe urn upon a table or stand,not shown. Extending outwardly from opposite sides of the boiler 6 thruthe wall 2 aie suitable connections 18 and 14: which provide forconnection of the boiler with the colfee urns, not shown.

The upper wall is provided centrally with a screw,v threaded opening 15in which a The cap 16 is provided centrally with a screw threadedopening 17 extending thrua boss 18 on the upper sidethereof. Anexternally screw threaded tube or pipe 19 is turned in said opening 17and extends a short distance above the cap. 'Iurned uponthe upper end ofthe pipe 19 is a cylindrical valve thecap 16.

Vcasing 20. having a reduced internally screw threaded extension 21 forreception of pipe 19. The upperY end of the casing is externally Vscrewthreaded as at and flangedcap 23 is turned upon said upper end 22. Thecap 23 is provided with a tubular externally screw threaded extension 24uponwhich one internally screw threaded end of an inverted U-shaped orgoose neck pipe 24 is mounted. This disposes the other end of the pipe25 so that it opensdownwardly to one side of the valve whereby the steamdischarged from the boiler will be directed downwardly towards ji smalloutlet opening` 26 is provided in the upper side of the pipe 25 so thatsome of the steam will be directed upwardly. The upper wall of the cover5 tapers upwardly into a flared mouth or spout 27 the opening thru whichis directly in line with the opening 26 whereby some of the steam willpass upwardly thru said spout 27 and into the atmosphere.

`Mounted for vertical movement within the valve casing 2O is afrustro-conieal valve 28 provided with longitudinal grooves 29 in itsouter face. The lower end of the valve is reduced as at 30 and engagesupon the annular seat 31 which isl provided by reducing the lower end ofthe'valve casing. Vvvhen thelower end of the valve engages the seatvalve is closed and steam is prevented from escaping thru the pipe 19.The valve is provided centrally with a circular bore 32 opening upon theupper side of the valve, said bore being screw threaded. A fianged plug33 is screwed into the upper end of said' bore so as to close the same.

The inner end of the bore is provided with a conical seat 34 for a smallball valve 35. Extending from the bottom of the conical seat anddownwardly into the valve isa passage 36 which communicates with apassage 37 that extends outwardly thru one into engagement with its seatand prevent escape of said steam out thru said passages 36 and 37. f i

In operation, water is fed into the boiler G thru pipe until a suitableamount of water is contained therein, and the .burner l() is lighted.The heat from the burner will pass upwardly thru the pipes 11 and inthis way together with direct application of heat thru the bottom wall3, the water is heated.

lVhen the water comes to a boil steam willrise upwardly thru the opening17 and pipe 19 and passage 38I into the bore 32. lPressure of steam inthe bore will maintain the ball valve 35 closed and prevent the escapeof steam thru the passages 36 and 37. When the pressure ofthe steam inthe boiler reaches a certain point it will lift the valve Y bodily and4the steam will escape around the valve, passing between the valve andwall of the casing therefor, thru the grooves 29.

.Steam having thus Vpassed the valve will duced to a safety factor thevalve will seat and close by its own weight. ln this connection it isnoted that the wall et is inwardly offset with relation to the upperedge of the Vwall 2. The upper edge of the wall 2 is provided with alaterally extending flange 39 which is adapted to receive, a similarflange 4() formed from the lower edge of the lid 5. This provides atight seal and prevents eX- cape of steam at this point. Some ofthesteam will escape thru the small opening Y 26 and pass out thru thespout or outlet 27 Only a small portion of the steam passes thru theopening 2 6- and when steam is seen to bel issu-ing from the spout 2:7vthe urn is ready for operation and thus the escape of;

steam serves as a signal. Since the steam is directed downwardly towardthe upper wall 4 and the hot air passes upwardly from said wall Ll, thesteam is dried and evaporated,

so that practically all ofthe heat of the;

steam is confined to the interior of the urn.

The urn of this invention may be quickly assembled or disassembled andthis is likewise true of the valve. One ofthe most essential features ofthe invention is the location of the valve within the lid and thearrangement thereof whereby practically little Vor no steam or waterwill be scattered or blown out of or around the side of the urn, alsothe provision for the intake of atmospheric air upon the drawing, off ofwater from the boiler. f

VI claim: Y Y 1 Y 1. A water urn comprising a boiler, a valve casingcommunicating with the boiler and being open at both ends, a goose neckpipe open `at both ends,.secured at Vvone end to the upper end of saidcasing and having a small outlet opening in its upper walla valve seat'at they lower endxoi said. casing, a valve vertically movable in andVspaced cir-V cumferentially from said casing andnor- Vmally engagingupon said Seat, Vsaid valve having a passage extending theretlnu open-Ving at one end at the lower end of the valve and at its other end uponthe sidcof the valve, upwardly opening check valve mounted within thevalve so'as to closefthe passage when the pressure of the steam in theboilerreaches a predetermined peint whereby said .pressure will: liftthe Vvalve bodily from its seat, said check valve being.

arranged to unseat when water is drawn from said boiler.

2. A water urn comprising a boiler, a

` valve casing communicating with the boiler and being open at its upperand lower ends and provided with a valve seat at its lower end, a valvenormally engaging said seat and being spaced circumferentially from thewalls of the casing, said valve having a bore extending from the upperend thereof a short distance into the valve and being provided with apassage extending first downwardly from the lower end of the bore thenoutwardly thru the side of the valve, a ball valve normally closing theupper end of said passage, said valve having another passage thereonextending upwardly from the lower end thereof to a point above the lowerend of tli'e bore and a plug removably fitted in and closing the end ofsaid bore at the upper end thereof. v

3. A' Water urn comprising a boiler, a

valve casing communicating with the boiler and being open at its upperand lower ends and provided with a valve seat at its lower end, a valvenormally engaging said seat and being spaced circumferentially from thewalls of the casing, said valve having a bore extending from the upperend thereof a short distance into the valve and being provided with apassage extending iirst downwardly from the lower end of the bore thenoutwardly thru the side of the valve, a ball lvalve normally closing theupper end of said passage, said valve having another passage thereonextending upwardly from the lower end thereof to a point above the lowerend of the bore and a plug removably fitted in and closing the end ofsaid bore at the upper end thereof, said first named valve beingprovided with grooves extending longitudinally upon the outer sidethereof.

THOMAS J. TOPPER.

